96 



THE ACTINOMYCETES, Vol. II 



2.j. Aerial mycelium white to pink. 

 Series Albosporeus 



26. Aerial mycelium ash-gray. 



Series Cinereo-ruber 

 (j) Vegetative mycelium violet-blue-red. 



27. White to gray aerial mycelium with 

 different shades. 



Series Violaceus 

 B. Actinomycetes cum sporophora opposita 



1 1 verticillata* 

 Section I. Substrate mycelium colorless. 



1. Aerial mycelium white or whitish. 



Series Circulatus 



2. Aerial mycelium gray and pinkish. 



Series Griseocarneus 

 Section II. Vegetative mycelium colored. 



(a) Substrate mycelium lemon-yellow- 

 creamy-colored. 



3. Aerial mycelium cinnamon-colored. 



Series Cinnamoneus 



(b) Substrate mycelium brownish-yellow. 



4. Aerial mycelium gray. 



Series Reticuli 



(c) Substrate mycelium brown. 



5. Aerial mycelium greenish-gray. 



Series Verticillat us 



(d) Substrate mycelium red. 



6. Aerial mycelium pinkish-red. 



Series Rubrireticuli 



5. CAUSE ET AL. SYSTEM (1957) 



Gause et al. modified Baldacci's system, 

 leaving out the sections and combining the 

 pigmentation of the aerial mycelium with 

 that of the substrate growth for series char- 

 acterization. Each series was subdivided, on 

 the basis of formation of a soluble pigment 

 in a complex organic medium, or of the 

 structure of the sporophores, or of the pig- 

 mentation of a synthetic medium. These 

 investigators, like Baldacci, adhered to the 

 genus designation Actinomyces, without, 

 however, considering the accumulated in- 

 formation concerning all other genera. 



* These sections were placed by Baldacci in ;i 

 separate genus "Strt ptoverticillium." 



Little consideration was given to previously 

 named species. 



I. Aerial mycelium rose-purple, sub- 

 strate mycelium colorless. 

 Series Lavendulae-roseus 

 II. Aerial mycelium rose-colored; sub- 

 strate mycelium yellow. 

 Series Fradiae 



III. Aerial mycelium rose-colored; sub- 

 strate mycelium brown. 



Series Fuscus 



IV. Aerial mycelium light rose; substrate 

 mycelium violet : 



Series Roseoviolaceus 

 V. Aerial mycelium rose-colored; sub- 

 strate mycelium red. 

 Series Ruber 

 VI. Aerial mycelium yellowish-green or 

 cream-colored; substrate mycelium 

 colored or colorless. 

 Series Helvolus 

 VII. Aerial mycelium white; substrate 

 mycelium colorless. 

 Series Alb us 

 VIII. Aerial mycelium white; substrate 

 mycelium red or brown. 

 Series Albosporeus 

 IX. Aerial mycelium blue or greenish- 

 blue; substrate mycelium colorless or 

 blue-colored. 



Series Coerulescens 

 X. Aerial mycelium gray; substrate 

 mycelium colorless. 

 Series Griseus 

 XI. Aerial mycelium gray, then black 

 (result of autolysis); substrate my- 

 celium colorless. 



Series Nigrescens 

 XII. Aerial mycelium gray; substrate my- 

 celium yellow or orange. 

 Series Aureus 



XIII. Aerial mycelium gray; substrate my- 

 celium yellow-brown. 



Series Chrysomallus 



XIV. Aerial mycelium gray; substrate 

 mycelium brown-black. 



Series Chromogenes 



